<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>弹出框</title>
    <link href="bootstrap/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
    <a href="#" data-toggle="modal" data-target="#about">关于</a>

    <div class="modal fade" id="about">
        <div class="modal-dialog">
            <div class="modal-content">
                <div class="modal-header">
                    <button type="button" class="close" data-dismiss="modal">
                        <span aria-hidden="true">
                            &times;
                        </span>
                        <span class="sr-only">
                            Close
                        </span>
                    </button>
                    <h4 class="modal-title">Modal title</h4>
                </div>
                <div class="modal-body">
                    ...
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
                    <button type="button" class="btn btn-primary">Save changes</button>
                </div>
            </div>
        </div>
    </div>
    <script src="jquery/jquery-2.1.4.min.js"></script>
    <script src="bootstrap/js/bootstrap.min.js"></script>
</body>
</html>